On Thu, May 02, 2024 at 11:44:21PM +0206, John Ogness wrote: > Currently the port->lock wrappers uart_port_lock(), > uart_port_unlock() (and their variants) only lock/unlock > the spin_lock. > > If the port is an nbcon console, the wrappers must also > acquire/release the console and mark the region as unsafe. This > allows general port->lock synchronization to be synchronized > with the nbcon console ownership. > > Note that __uart_port_using_nbcon() relies on the port->lock > being held while a console is added and removed from the > console list (i.e. all uart nbcon drivers *must* take the > port->lock in their device_lock() callbacks). > > Signed-off-by: John Ogness <john.ogness@xxxxxxxxxxxxx> > --- > include/linux/serial_core.h | 82 ++++++++++++++++++++++++++++++++++++- > 1 file changed, 80 insertions(+), 2 deletions(-) Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
